US584001A - le blond - Google Patents

Description

(No Model.) 4 SheetsSheet l. R. K. LE BLOND & N. D. GHARD.

ENGINE LATHE.

No. 584,001. Patented June 8,1897.

'W'vwsses JHQZ (No Model.) 7 4 Sheets-sheet 2.

R. K. LE BLOND & N. D. CHARD. ENGINE LATHE.

No. 584,001. Patented June 8, 1897.

(No Model) 4 Sheets-Sheet 3. R. K. LE BLOND 81; N. D. CHARD. ENGINE LATHE Patented Junev 8, 1897.

Inwmfiws Maud 55; 3%

12% away (No Model.) 4 Sheets-Sheet 4. R. K. LE BLOND & N. D. UHARD.

ENGINE LATHE.

No. 584,001. Patented June 8,1897.

0.. wnumcron u c UNITED STATES PATENT Orricn.

RICHARD K. LE BLOND, OF LINW'OOD, AND NICHOLAS D. GUARD, OF CINOINNAII, OHIO; SAID CIIARD ASSIGNOR TO SAID LE BLOND.

ENGINE-LATHE.

SPECIFICATION forming part of Letters Patent No. 584,001, dated June 8, 1897.

Application filed June 24, 1895.

To all whom it may concern.-

Be it known that we,RIC-HARD K.LE BLOND, a resident of the village of Linwood, and N ICHOLAS D. OHARD, a resident of the city of Cincinnati, in the county of Hamilton, State of Ohio, citizens of the United States, have invented certain new and useful Iniprovements in Engine-Lathes, of which the following is a specification.

The several features of our invention and the various advantages resulting from their use, eonjointly or otherwise, will be apparent from the following description and claims.

In the accompanying drawings, making a part of this application, Figure 1, Sheet 1, represents a side elevation of one end of a lathe illustrating certain features of our invention. Fig. 2, same sheet, represents an elevation of that end of the said lathe which faces toward the left in Fig. 1. Fig. 3, same sheet, represents an end elevation of certain gear-4:0 wit, for operating the shafts for respectively operating the longitudinal feed and the cross'feed. This view shows a part of the bed of the lathe and that in section. The elevation, die, is taken in the plane of the dotted line 3 3 of Fig. l and is that seen by the spectator when standing at the left end of Fig. 1. Fig. 4, Sheet 2, isaviewin el.evation,excepting the V-ways, which latter are in section, and showing the supports for the jaws of the follow 'est, which supports we have devised and employ for steadying shafts or rods to be operated on or belonging to parts to be turned. Fig. 5, Sheet 2, is a view, partlyin elevation and partly in sect-ion, taken at the plane of the dotted line 5 5 of Fig. etand showingthat part of the device which at said plane faces toward the left in said Fig. 4.. Fig. 6, Sheet 2, is an elevation of detail of the follow-rest which holds the jaws. Fig. 7, Sheet 2, is a vertical transverse section of one of the jaws or holders of the follow-rest shown in Figs. 4 and 5, this section being taken in the plane of the dotted line 7 f Fig. 4. Fig. 8, Sheet 3 is a vertical central longitudinal section of the mechanism seen in Figs. 1 and 2, whereby the belt-pulleys are enabled to always keep the belt taut irrespective of which pulleys the belt is running upon. This section is taken in the plane of the dotted line 8 S of Serial No. 553,844. (No model.)

1 Fig. 9, the operating shafts and rods being left in elevation. Fig. 5), Sheet 3, is a vertical transverse section of the devices shown in Fig. 8, said section being taken in the plane of the dotted line 5) 9 of Fig. 8, that face of the section being shown which faces toward the right hand of Fig. 8. Fig. 10, Sheet 2, is a rear elevation of the tail-stock and trans verse guideways and longitudinal V ways or guides, the latter in section, and illustrating another feature of our invention. Fig. 11, Sheet 3, is an end elevation of swinging link for tightening belt on cone-pulleys. On Sheet 4, Fig. 12 is an end view of the novel devices mediate accompanying parts. Fig. 13 represents a side view of the same. Fig. 14 represents a top or plan view of the same.

A indicates the bed of the lathe.

A A respectively indicate the sides of the lathe-bed. These sides carry the V-ways A on which certain adjustable portions of the lathe slide.

B indicates the headstock, and B B the respective end uprights of the same.

O is the spindle,duly journaled in the headstock. The caps C of the journal-boxes of said spindle and bolts 0 for securing the caps in place, are shown in Fig. 1. The spindle is provided with the customary screw thread 0 and the turning-center On the spindle is. a cone-pulley D of any desired number of steps. Here four are shown-to wit, D D D, and D for en ablin g the speed of rotation of the spindle to be changed and maintained at will. At each end of the conepulley D is a gearwheel. The gear-wheel E at the right-hand end is of large diameter, while the gear-wheel E of the left-hand end is of small diameter.

On a shaft F duly supported, is a small gear-wheel F meshing with the aforesaid gear E, and a large gear F, meshing with said gear E The gears E and F are conventionally indicated by dotted lines in Fig. 2. The purpose of these gears F and F in combination with the gears E and E and the spindle O and cone-pulley D, to increase the power, &c., is well known, and further description thereof is deemed unnecessary.

The spindleshaft O is extended to the left for s upportin g the stead yin g-j awe and the imbeyond the upright of the head-stock and carries a small pinion G and a larger pinion G and cone-pulley H, having steps, as H H H and. IF, all of which are keyed to the spindle O.

The pinion G is capable of being reciprocated longitudinally on the spindle O, the pinion G when slid to the right, encircling the pinion G. The latter construction is a feature of invention more fully described in another application for Letters Patent. 0011- sequentlyfurther description of it is omitted herefrom.

At the end of the lathe is a frame I, termed a quadran t, pivoted at the point P-to wit, at and on the shaft I as hereinafter mentioned. This quadrant-frame has a handle I atits peripheral end for enabling it (the frame) to be raised and lowered. In the portion of the quadrant near its periphery is a slot I", and a set-screw bolt 1 is present therein and carries a nut I the bolt 1 being fixed in the lathe. In this quadrant are two other slots, respectively lettered 1 and 1 The purpose of these slots is to admit of the changing of the gear and for cutting left and right hand threads. Such changing of the gear being already well known further description thereof is deemed unnecessary. In the upper left-hand corner of this quadrant I and in the slot 1 is an adjustable bush J carrying a large gear J. A pinion J rotates on an adjustable bush J, located in slot 1 and a larger gear-wheel J rotates on the shaft 1 The intermediate pinion J 3 meshes with the gear J at one point and with the gear J at another. The gear J meshes with pinion G or G as the case may be, and is rotated thereby. These gears J, J and J may be severally exchanged for gears of other diameters, thereby altering the speed and direction of the shaft 1 whose use is now to be described. This shaft 1 is duly journaled in the bed of the lathe or supports thereof, and within the bed it carries a pinion K, which latter is the first of a series of gears, the others of this series and their connections and accompanying mechanism being described as follows:

The pinion K turns loosely on shaft K. The latter shaft K is jonrnaled in the double journal-piece L, fixed to the side of the lathebed A The preferred means of connecting piece L to the bed-plate consists of a ridge or elongated lug \V, which latter is received into a suitable recess in the bed-plate and clamped in place there. The shaft K turns within such journal-piece L in opening W but to em able the wear of the parts to be taken up without the necessity of replacing the shaft K and the journal-piece L we locate a bushing 7" within the opening of the journalpiece L. The bushing \V is held in place by means of a ring L on shaft K at the righthand end of the journal-piece bearing against that end of the latter (see Fig. 8, Sheet 3) foregoing construction both the shaft K and the bushing are held in place.

The preferred mode of providing the projection PK is by enlarging the shaft K".

thereby forming the enlarged portion Eli". On this enlarged portion rotates the gear K having the hub HK The gear is prevented from sliding to the left on the shaft K by means of the ring or collar L and is prevented from sliding to the right on shaft K by a projection PE K on the latter shaft. The preferred mode of providing this projection consists in the further enlargement or the shaft K forming the enlarged portion E K. On this portion of the shaft is fixed a key or spline M whose length is parallei to the axis of said shaft K On the shaft K (E K slides a sleeve M The latter engages and slides on the spline M and is therein compelled to rotate with the shaft. The sleeve M has on its left end one half, M of the clutch. On its right-hand end is a projecting ring M for moving the clutch M to the left. On the right-hand end of the gear K or its h u o is the other half, M, of the clutch. A projection M on the right-hand end of the spline prevents the sleeve M with clutch-piece M". from sliding too far to the right and off the spline.

Vhen the clutclrpiece M is slid to the right, the gear K is disengaged therefrom and from the shaft K and turns loosely thereon. \Vhen the clutch-piece M is moved to the left and into engagement with its complementary clutch-piece M, the gear K is in engagement with the shaft K Then the shaft K (the lead-screw shaft) is turned by the gear.

In the lower portion of the double journat box piece L rotates an end portion of the feedrod K A bushing K{ is fixed within the piece L and surrounds the rod K". The rod K rotates within the bushing and is prevented from slipping lengthwise out of place by means of a ring K on the red at one end or the bushing and a set-ring K on the red at the other end of the bushing, the rings being fixed on the red by means of set-screws K substantially as shown.

On the feed-shaft, to the right of the serring K, is a gear K", having a hub N, provided with a right-hand end annular flange or projection N for sliding the gear K on the feedshaft 1U to the right or left, as occasion mav require.

Fixed to the rod K is a spline or feather N, and the hub of the gear K engages this feather. Thus the gear K is compelled to turn with the rod K. A projection N at the right-hand end of the feather limits the move ment of the gear to the right.

Belowthe double journal-piece L is a swinging journal-box piece L having end pieces L L whereby the journal-box piece L is pivotally swung on the rod R or rather on the bushing K of the latter, as shown. As the pieces L L closely embrace the box L between them the box-piece L is held firmly from slipping laterally-viz. in the direction of the length of the red X.

The box-piece L carries a shaft K rotatable therein. At the left this shaft carries a cone-pulley P, fixed thereto. On the righthand end of the shaft is fixed the gear K This shaft K is prevented from slipping toward the left by means of the bushing K and is prevented from slipping toward the right bymeans of collar K. The right-hand point L is split and the split-portion L secured together by a set-screw L". Thus by tighten ing the set-screw L the split portions are approxim ated and are caused to tightly embrace the bushing K and thus hold the box-piece L at a desired angle in relation to the rod K Such setting operates to tighten the belt running from cone-pulley P to cone-pulley H.

The speed of rotation of the feed-rod, and consequently the rapidity of movement of the feed,will be governed by the interchangeable gears G, G and J There the gear G is exchanged for gear G the speed of the system J J J will be increased, and by a proper exchange of gears for gear J the speed of this system will be increased. Likewise by an inverse arrangement the speed of this system will be diminished. Thus the speed of rotation of the cross-feed shaft K can be increased or diminished at will.

These last-described portions of our invention are as follows: To operate the lead-screw shaft K by means of the gears, we cause the clutch-piece M to engage clutch M, and the lead-screw shaft will be operated. The feedshaftis operated by the pulley-feed when gear K is at the left and in engagement with pinion K hen the gear K is moved to the right out of engagement with pinion K and into engagement with gear K and the clutch M is to the right and disengaged, the feed,- shaft is rotated. by the gears. \Vhen the pulley-gear is used, the gear K is out of engagement with the gear K One of the f unotions of the lead-screw shaft when revolving is well known. That function is to move or feed forward the screw-thread cutter or cutters in chasing (feeding) threads on the rod presented to be operated upon. The function of the leadscrew is to impart motion to the lathecarriage for any desirable purpose connected with lathework where the carriage requires to be fed forward at certain definite speeds.

It will be perceived that while gear K is in engagement with the gear K it is out of engagement with the gear K Consequently there can be no breakage of parts caused by the pulleys operating the gear K at a given speed while the gear K driven by the pulleys 011 cones H and P, move at a different rate of speed or in an opposite direction. Thus there is no necessity of throwing ed the belt when'changing from a belt to a geared feed. Where the lead-screw shaft K is to rotate at a different speed, gear J 5 is to be exchanged forgear of a different diameter. To getabeltfeed, the gear K is moved to the left and into engagement with the gear K and will then be rotated by the latter through the agency of the cone-pulleys H and P, and the rate of speed of the feed-rod X will depend upon the location of the belt on the two cone-pulleys H and P. A belt-feed is often preferred under certain well-known conditions.

As to clutch M M it may be further remarked that in chasing threads the clutchpiece M is engaged with piece M, practically making this one piece and revolving shaft K In using geared feed-that is to say, in employing the gear to rotate the feed-rod K (without rotating shaft I )the gear K revolves loosely on shaft K the clutch-piece M being disengaged from clutch-piece M, and the gear K is moved over to the right and into engagement with the pinion K Another feature of our invention relates to the construction whereby the jaws serving to steady the work while being operated on are supported.

R R are the jaws, each having a runway R and a sliding jaw R thereon and a cap R".

A screw bolt passing through all and screwed into the support S secures these parts in place. The sliding jaw R has a central slot R with astop secured to the runway to limit the movement of the jaw. The support S of the jaws is of a novel form, and its arrangement on the sliding cross-slide or carriage T is novel. The support S consists of an upper portion or plate 8*, to which the jaws R are attached, and a lower portion consisting of an arch S At each end of the arch straight supportingpieces S are placed. The lower support S S of the arch spans the narrow portion of the bed T of the carriage T. One of the supports S is bolted to one side of the neck of this carriage T and the other support S is bolted to the other side of the neck of the carriage-bed, all substantially as shown in Figs. land 5. Beneaththe arch S slides the cross-slide carriage T on the slide or guide, the latter being preferably of a clove tail form, as shown, and interfitting the corresponding recess of the carriage T This carriage has a transverse groove T To a suitable piece sliding in said groove T and set by a set-screw is connected a tool-post T which carries a tool, as T capable of operating on the article to be worked. A set-screw T sets the tool at a proper point in the post so that the tool can do its work on the article to be fashioned, shaped, out, bored, &c. In the present instance a rod T is shown being turned by the tool, while the steadyingjaws hold the article (rod) steady and in place. The cross-slide carriage T is moved along the slide and is set by suitable and well-known meansc. 9., by a screw, due. (Not shown, because well understood.) This arrangement and construction afford a strong and perfectly rigid steady-rest, thereby insuring accurate work.

The construction of the arch is such as to allow the eross-slide carriage T to slide beneath it and allow the tool to be broughtinto action in the same vertical plane in which the steadying-jaws are located. The steadyingjaws are therefore of the greatest possible service in preventing the vibration of the article operated on at the very locality where the tool in working causes the most flexion or vibration of the article which is being fashioned, the, and by steadyin g the latter article best enables the tool to do the best work.

The remaining feature of ourinvention relates to a graduation of the tail-stock slide, whereby great accuracy in the setting of the slide for a repetition of a given class of work is obtained. The construction is as follows: The tail-stock bed V carries the usual slide V on which the superstructure of the tailstock is supported. The rear faces of the slide V and bed V in the vicinity of each other and where they meet are graduated in fractions of an inch. The relative position of the parts as to the scale being known while doing a piece of work the parts can be readily and accurately reset when a like piece of work is to be performed.

WVhat we claim as new and of our invention, and desire to secure by Letters Patent, 1s-

1. In a lathe, the combination of the gear K mounted loosely on shaft K operating the lead-screw, and clutch M, M and sleeve, and feather with stop M interconnecting the gear K with shaft K and the gear K on shaft 1 and interchangeable gears in turn operated by the gear on spindle-shaft O, and gear K", shaft K on which gear K is arranged to slide with the length of said shaft, gear K on shaft K and located at one side of gear K and cone-pulley P on shaft K and cone-pulley H on spindle O for enabling the speed of the feed to be varied, substantially as and for the purposes specified.

2. The combination, in a lathe, of the shaft K operating the 1ead-screw shaft, gear K thereon, clutch thereof sliding on said shaft and capable of engagement with the gear K the latter meshing with gear K, connected to the spindle O by interchangeable intermediate gear, and the feed-rod K carrying the gear K sliding thereon, and capable of being brought into mesh with gear K gear K in mesh with the gear K when the latter is out of mesh with gear K shaft K thereof and cone-pulley P thereon, and cone-pulley H on spindle O, substantially as and for the purposes specified.

3. In a lathe, the spindle, cone-pulley fl thereon, shaft K cone-pulleyP and gear K thereon, swinging supportL L L, the shaft K journaled in the swinging support L L L and feed-rod K forming the pivotal support of the swinging support L L L substantially as and for the purposes specified.

i. The combination, in alathe, of theleadscrew shaft K operated by the gear K thereon, clutch thereof sliding on said shaft and capable of engagement with the gear K the latter meshing with gear K, connected to the spindle O by interchangeable intermediate gear, and the feed-rod K carrying the gear K, sliding thereon and capable of being brought into mesh with gear K gear K in mesh with the gear K when the latter is out of mesh with gear K shaft 1" thereof and cone-pulley P thereon, and cone-pulley H on spindle O, and the swinging support L L L", in which shaft K is journaled, and which is pivoted on shaft K substantially as and for the purposes specified.

5. The combination, in a lathe, of the leadscrew shaft K operating the gear K thereon. clutch thereof sliding on said shaft and capable of engagement with the gear K the latter meshing with gear K, connected to the spindle C by interchangeable intermediate gear, and the feed-rod K carrying the gear K sliding thereon and capable of being brought into mesh with gear K gear K in mesh with the gear K when the latter is out of mesh with gear K shaft K thereof and cone-pulley P thereon, and cone-pulley H on spindle C, and the swinging support L L L in which shaft K is journaled,'and which is pivoted on shaft K and the support L fixed to the bed .9. and having a journal-bearing for the shafts K and K substantially as and for the purposes specified.

6. The combination of gear K and gearing for operating the same, and journal-box piece L, and shaft K therein and intermediate bushing having annular enlargement L, set-ring L L at one end of the shaft K and ring L at the other end of the journal-box piece L, enlarged portion EK of shaft K next to the ring L the gear K having the hub HK and the clutch-piece ll.

enlarged portion E K of shaft K against which the hub of gear K abuts, and clutchpiece M sliding on the shaft K, and feather M M, on the shaft, substantially as and for the purposes specified.

7. The combination of gear K and gearing for operating the same, and journal-box piece L, and shaft K therein and intermediate bushing V having annular enlargement L. set-ring L L at one end of the shaft K and ring L at the other end of the journaibox piece L, enlarged portion EK of shaft K", next to the ring L the gear K having the hub HK and the clutch-piece M, enlarged portion E K of shaft K against which the hub of gear K abuts, and clutch-piece 31 sliding on the shaft K, and feather M )1 on IIO the shaft, and feed-rod K in the journal-box piece L and bushing K surrounding the rod K therein, set-ring K K", at end of the shaft, and set-ring 1C, K at the other end of the bushing, and gear K, sliding on rod K and feather N N substantially as and for the purposes specified.

S. The combination of gear K and gearing for operating the same, and journal-box piece L, and shaft K therein, and intermediate bushing W having annular enlargement L, set-ring L L at one end of the shaftK and ring L at the other end of the journal-box piece L, enlarged portion EK of shaft K next to the ring L the gear K having the hub'l'll'f, and the clutch-piece M, enlarged portion E K of shaft K against which the hub of gear K abuts, and clutch-piece M sliding on the shaft K and feather M M on the shaft, and feed-rod K in the journalbox piece L and bushing K surrounding the rod K therein, set-ring K K at end of the shaft, and set-ring K K at the other end of the bushing, and gear K sliding on rod K and feather i N and link-piece L having linleeyes L L respectively embracing the bushing K at the adjacent ends of the journal-box piece, and capable of being tightened thereon, and shaft K in the part L and gear K thereon, and pulley-cone P, pulley-cone II on spindle C, substantially as and for the purposes specified.

9. The combination of lead-screw shaft K gear Y and clutch M, M thereon, journalbox piece L, feed-rod K in journal-box, bushing K therein and around the shaft K and its feather on rod K oscillatory piece L shaft K therein carrying conepulley P for use in connection with a complementary conepulley, and gear K capable of engagement with gear K", and the eyes L L embracing the bushing, and capable of being tightened thereon, substantially as and for the purposes specified.

10. In a lathe,thc combination of the steadying-jaws, and the carriage, and the arch for supporting the superstructure to which the jaws are attached, and having legs S respectively connected to the narrow neck of the carriage, between the V-ways of thelathe, and the cross-sliding carriage T and its guideway located on the main carriage, transyersely thereto and extending between the legs 8* and under the arch S the cross-sliding carriage being adapted to slide beneath the arch and between the legs S substantially as and for the purposes specified.

11. In a lathe, the combination of the Worksteadying jaws, an arch for supporting the jaws, and having legs connecting the arch to the carriage, and the cross-sliding carriage T carrying the tool and sliding'beneath the arch, and carrying the tool-post, substantially as and for the purposes specified.

12. In a feed mechanism for lathes, the combination of the lead-screw shaft,feed-rod, and cone-pulley shaft K", stationary mounting for the lead-screw shaft and feed-rod, and swinging bearing L of said cone-pulley shaft K and the pinions Y and K respectively on the lead-screw shaft and feed-rod, and the pinion K on shaft K substantially as and for the purposes specified.

13. In a feed mechanism for lathes, the combination of the lead-screw shaft, feedrod and cone pulley shaft K stationary mounting for the lead-screw shaft and feed-rod, and swinging bearing L of said cone-pulley shaft K and the pinion K and clutch of leadscrew shaft, and pinion K splined on the feed-rod, and pinion K fixed on the conepulley shaft, substantially as and for the purposes specified.

RlCI-IARD K. LE BLOND. NICHOLAS D. CHARD.

Attest:

E'ow. S. GATES, JOSEPH SPAHN, G. J. McDIAnMID.

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